Add 54/9 and 81/90
1st number: 6 0/9, 2nd number: 81/90
54/9 + 81/90 is 69/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
54/9 = 54 × 10/9 × 10 = 540/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Add the two like fractions:
540/90 + 81/90 = 540 + 81/90 = 621/90 - 621/90 simplified gives 69/10
- So, 54/9 + 81/90 = 69/10
In mixed form: 69/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+81/90 54/27+81/90 54/45+81/90 54/63+81/90